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1 | /* |
2 | * sym53c416.c |
3 | * Low-level SCSI driver for sym53c416 chip. |
4 | * Copyright (C) 1998 Lieven Willems (lw_linux@hotmail.com) |
5 | * |
6 | * Changes : |
7 | * |
8 | * Marcelo Tosatti <marcelo@conectiva.com.br> : Added io_request_lock locking |
9 | * Alan Cox <alan@lxorguk.ukuu.org.uk> : Cleaned up code formatting |
10 | * Fixed an irq locking bug |
11 | * Added ISAPnP support |
12 | * Bjoern A. Zeeb <bzeeb@zabbadoz.net> : Initial irq locking updates |
13 | * Added another card with ISAPnP support |
14 | * |
15 | * LILO command line usage: sym53c416=<PORTBASE>[,<IRQ>] |
16 | * |
17 | * This program is free software; you can redistribute it and/or modify it |
18 | * under the terms of the GNU General Public License as published by the |
19 | * Free Software Foundation; either version 2, or (at your option) any |
20 | * later version. |
21 | * |
22 | * This program is distributed in the hope that it will be useful, but |
23 | * WITHOUT ANY WARRANTY; without even the implied warranty of |
24 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
25 | * General Public License for more details. |
26 | * |
27 | */ |
28 | |
29 | #include <linux/module.h> |
30 | #include <linux/kernel.h> |
31 | #include <linux/types.h> |
32 | #include <linux/init.h> |
33 | #include <linux/string.h> |
34 | #include <linux/ioport.h> |
35 | #include <linux/interrupt.h> |
36 | #include <linux/delay.h> |
37 | #include <linux/proc_fs.h> |
38 | #include <linux/spinlock.h> |
39 | #include <asm/dma.h> |
40 | #include <asm/io.h> |
41 | #include <linux/blkdev.h> |
42 | #include <linux/isapnp.h> |
43 | #include "scsi.h" |
44 | #include <scsi/scsi_host.h> |
45 | #include "sym53c416.h" |
46 | |
47 | #define VERSION_STRING "Version 1.0.0-ac" |
48 | |
49 | #define TC_LOW 0x00 /* Transfer counter low */ |
50 | #define TC_MID 0x01 /* Transfer counter mid */ |
51 | #define SCSI_FIFO 0x02 /* SCSI FIFO register */ |
52 | #define COMMAND_REG 0x03 /* Command Register */ |
53 | #define STATUS_REG 0x04 /* Status Register (READ) */ |
54 | #define DEST_BUS_ID 0x04 /* Destination Bus ID (WRITE) */ |
55 | #define INT_REG 0x05 /* Interrupt Register (READ) */ |
56 | #define TOM 0x05 /* Time out multiplier (WRITE) */ |
57 | #define STP 0x06 /* Synchronous Transfer period */ |
58 | #define SYNC_OFFSET 0x07 /* Synchronous Offset */ |
59 | #define CONF_REG_1 0x08 /* Configuration register 1 */ |
60 | #define CONF_REG_2 0x0B /* Configuration register 2 */ |
61 | #define CONF_REG_3 0x0C /* Configuration register 3 */ |
62 | #define CONF_REG_4 0x0D /* Configuration register 4 */ |
63 | #define TC_HIGH 0x0E /* Transfer counter high */ |
64 | #define PIO_FIFO_1 0x10 /* PIO FIFO register 1 */ |
65 | #define PIO_FIFO_2 0x11 /* PIO FIFO register 2 */ |
66 | #define PIO_FIFO_3 0x12 /* PIO FIFO register 3 */ |
67 | #define PIO_FIFO_4 0x13 /* PIO FIFO register 4 */ |
68 | #define PIO_FIFO_CNT 0x14 /* PIO FIFO count */ |
69 | #define PIO_INT_REG 0x15 /* PIO interrupt register */ |
70 | #define CONF_REG_5 0x16 /* Configuration register 5 */ |
71 | #define FEATURE_EN 0x1D /* Feature Enable register */ |
72 | |
73 | /* Configuration register 1 entries: */ |
74 | /* Bits 2-0: SCSI ID of host adapter */ |
75 | #define SCM 0x80 /* Slow Cable Mode */ |
76 | #define SRID 0x40 /* SCSI Reset Interrupt Disable */ |
77 | #define PTM 0x20 /* Parity Test Mode */ |
78 | #define EPC 0x10 /* Enable Parity Checking */ |
79 | #define CTME 0x08 /* Special Test Mode */ |
80 | |
81 | /* Configuration register 2 entries: */ |
82 | #define FE 0x40 /* Features Enable */ |
83 | #define SCSI2 0x08 /* SCSI 2 Enable */ |
84 | #define TBPA 0x04 /* Target Bad Parity Abort */ |
85 | |
86 | /* Configuration register 3 entries: */ |
87 | #define IDMRC 0x80 /* ID Message Reserved Check */ |
88 | #define QTE 0x40 /* Queue Tag Enable */ |
89 | #define CDB10 0x20 /* Command Descriptor Block 10 */ |
90 | #define FSCSI 0x10 /* FastSCSI */ |
91 | #define FCLK 0x08 /* FastClock */ |
92 | |
93 | /* Configuration register 4 entries: */ |
94 | #define RBS 0x08 /* Register bank select */ |
95 | #define EAN 0x04 /* Enable Active Negotiation */ |
96 | |
97 | /* Configuration register 5 entries: */ |
98 | #define LPSR 0x80 /* Lower Power SCSI Reset */ |
99 | #define IE 0x20 /* Interrupt Enable */ |
100 | #define LPM 0x02 /* Low Power Mode */ |
101 | #define WSE0 0x01 /* 0WS Enable */ |
102 | |
103 | /* Interrupt register entries: */ |
104 | #define SRST 0x80 /* SCSI Reset */ |
105 | #define ILCMD 0x40 /* Illegal Command */ |
106 | #define DIS 0x20 /* Disconnect */ |
107 | #define BS 0x10 /* Bus Service */ |
108 | #define FC 0x08 /* Function Complete */ |
109 | #define RESEL 0x04 /* Reselected */ |
110 | #define SI 0x03 /* Selection Interrupt */ |
111 | |
112 | /* Status Register Entries: */ |
113 | #define SCI 0x80 /* SCSI Core Int */ |
114 | #define GE 0x40 /* Gross Error */ |
115 | #define PE 0x20 /* Parity Error */ |
116 | #define TC 0x10 /* Terminal Count */ |
117 | #define VGC 0x08 /* Valid Group Code */ |
118 | #define PHBITS 0x07 /* Phase bits */ |
119 | |
120 | /* PIO Interrupt Register Entries: */ |
121 | #define SCI 0x80 /* SCSI Core Int */ |
122 | #define PFI 0x40 /* PIO FIFO Interrupt */ |
123 | #define FULL 0x20 /* PIO FIFO Full */ |
124 | #define EMPTY 0x10 /* PIO FIFO Empty */ |
125 | #define CE 0x08 /* Collision Error */ |
126 | #define OUE 0x04 /* Overflow / Underflow error */ |
127 | #define FIE 0x02 /* Full Interrupt Enable */ |
128 | #define EIE 0x01 /* Empty Interrupt Enable */ |
129 | |
130 | /* SYM53C416 SCSI phases (lower 3 bits of SYM53C416_STATUS_REG) */ |
131 | #define PHASE_DATA_OUT 0x00 |
132 | #define PHASE_DATA_IN 0x01 |
133 | #define PHASE_COMMAND 0x02 |
134 | #define PHASE_STATUS 0x03 |
135 | #define PHASE_RESERVED_1 0x04 |
136 | #define PHASE_RESERVED_2 0x05 |
137 | #define PHASE_MESSAGE_OUT 0x06 |
138 | #define PHASE_MESSAGE_IN 0x07 |
139 | |
140 | /* SYM53C416 core commands */ |
141 | #define NOOP 0x00 |
142 | #define FLUSH_FIFO 0x01 |
143 | #define RESET_CHIP 0x02 |
144 | #define RESET_SCSI_BUS 0x03 |
145 | #define DISABLE_SEL_RESEL 0x45 |
146 | #define RESEL_SEQ 0x40 |
147 | #define SEL_WITHOUT_ATN_SEQ 0x41 |
148 | #define SEL_WITH_ATN_SEQ 0x42 |
149 | #define SEL_WITH_ATN_AND_STOP_SEQ 0x43 |
150 | #define ENABLE_SEL_RESEL 0x44 |
151 | #define SEL_WITH_ATN3_SEQ 0x46 |
152 | #define RESEL3_SEQ 0x47 |
153 | #define SND_MSG 0x20 |
154 | #define SND_STAT 0x21 |
155 | #define SND_DATA 0x22 |
156 | #define DISCONNECT_SEQ 0x23 |
157 | #define TERMINATE_SEQ 0x24 |
158 | #define TARGET_COMM_COMPLETE_SEQ 0x25 |
159 | #define DISCONN 0x27 |
160 | #define RECV_MSG_SEQ 0x28 |
161 | #define RECV_CMD 0x29 |
162 | #define RECV_DATA 0x2A |
163 | #define RECV_CMD_SEQ 0x2B |
164 | #define TARGET_ABORT_PIO 0x04 |
165 | #define TRANSFER_INFORMATION 0x10 |
166 | #define INIT_COMM_COMPLETE_SEQ 0x11 |
167 | #define MSG_ACCEPTED 0x12 |
168 | #define TRANSFER_PAD 0x18 |
169 | #define SET_ATN 0x1A |
170 | #define RESET_ATN 0x1B |
171 | #define ILLEGAL 0xFF |
172 | |
173 | #define PIO_MODE 0x80 |
174 | |
175 | #define IO_RANGE 0x20 /* 0x00 - 0x1F */ |
176 | #define ID "sym53c416" /* Attention: copied to the sym53c416.h */ |
177 | #define PIO_SIZE 128 /* Size of PIO fifo is 128 bytes */ |
178 | |
179 | #define READ_TIMEOUT 150 |
180 | #define WRITE_TIMEOUT 150 |
181 | |
182 | #ifdef MODULE |
183 | |
184 | #define sym53c416_base sym53c416 |
185 | #define sym53c416_base_1 sym53c416_1 |
186 | #define sym53c416_base_2 sym53c416_2 |
187 | #define sym53c416_base_3 sym53c416_3 |
188 | |
189 | static unsigned int sym53c416_base[2]; |
190 | static unsigned int sym53c416_base_1[2]; |
191 | static unsigned int sym53c416_base_2[2]; |
192 | static unsigned int sym53c416_base_3[2]; |
193 | |
194 | #endif |
195 | |
196 | #define MAXHOSTS 4 |
197 | |
198 | #define SG_ADDRESS(buffer) ((char *) sg_virt((buffer))) |
199 | |
200 | enum phases |
201 | { |
202 | idle, |
203 | data_out, |
204 | data_in, |
205 | command_ph, |
206 | status_ph, |
207 | message_out, |
208 | message_in |
209 | }; |
210 | |
211 | typedef struct |
212 | { |
213 | int base; |
214 | int irq; |
215 | int scsi_id; |
216 | } host; |
217 | |
218 | static host hosts[MAXHOSTS] = { |
219 | {0, 0, SYM53C416_SCSI_ID}, |
220 | {0, 0, SYM53C416_SCSI_ID}, |
221 | {0, 0, SYM53C416_SCSI_ID}, |
222 | {0, 0, SYM53C416_SCSI_ID} |
223 | }; |
224 | |
225 | static int host_index = 0; |
226 | static char info[120]; |
227 | static Scsi_Cmnd *current_command = NULL; |
228 | static int fastpio = 1; |
229 | |
230 | static int probeaddrs[] = {0x200, 0x220, 0x240, 0}; |
231 | |
232 | static void sym53c416_set_transfer_counter(int base, unsigned int len) |
233 | { |
234 | /* Program Transfer Counter */ |
235 | outb(len & 0x0000FF, base + TC_LOW); |
236 | outb((len & 0x00FF00) >> 8, base + TC_MID); |
237 | outb((len & 0xFF0000) >> 16, base + TC_HIGH); |
238 | } |
239 | |
240 | static DEFINE_SPINLOCK(sym53c416_lock); |
241 | |
242 | /* Returns the number of bytes read */ |
243 | static __inline__ unsigned int sym53c416_read(int base, unsigned char *buffer, unsigned int len) |
244 | { |
245 | unsigned int orig_len = len; |
246 | unsigned long flags = 0; |
247 | unsigned int bytes_left; |
248 | unsigned long i; |
249 | int timeout = READ_TIMEOUT; |
250 | |
251 | /* Do transfer */ |
252 | spin_lock_irqsave(&sym53c416_lock, flags); |
253 | while(len && timeout) |
254 | { |
255 | bytes_left = inb(base + PIO_FIFO_CNT); /* Number of bytes in the PIO FIFO */ |
256 | if(fastpio && bytes_left > 3) |
257 | { |
258 | insl(base + PIO_FIFO_1, buffer, bytes_left >> 2); |
259 | buffer += bytes_left & 0xFC; |
260 | len -= bytes_left & 0xFC; |
261 | } |
262 | else if(bytes_left > 0) |
263 | { |
264 | len -= bytes_left; |
265 | for(; bytes_left > 0; bytes_left--) |
266 | *(buffer++) = inb(base + PIO_FIFO_1); |
267 | } |
268 | else |
269 | { |
270 | i = jiffies + timeout; |
271 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
272 | while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & EMPTY) && timeout) |
273 | if(inb(base + PIO_INT_REG) & SCI) |
274 | timeout = 0; |
275 | spin_lock_irqsave(&sym53c416_lock, flags); |
276 | if(inb(base + PIO_INT_REG) & EMPTY) |
277 | timeout = 0; |
278 | } |
279 | } |
280 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
281 | return orig_len - len; |
282 | } |
283 | |
284 | /* Returns the number of bytes written */ |
285 | static __inline__ unsigned int sym53c416_write(int base, unsigned char *buffer, unsigned int len) |
286 | { |
287 | unsigned int orig_len = len; |
288 | unsigned long flags = 0; |
289 | unsigned int bufferfree; |
290 | unsigned long i; |
291 | unsigned int timeout = WRITE_TIMEOUT; |
292 | |
293 | /* Do transfer */ |
294 | spin_lock_irqsave(&sym53c416_lock, flags); |
295 | while(len && timeout) |
296 | { |
297 | bufferfree = PIO_SIZE - inb(base + PIO_FIFO_CNT); |
298 | if(bufferfree > len) |
299 | bufferfree = len; |
300 | if(fastpio && bufferfree > 3) |
301 | { |
302 | outsl(base + PIO_FIFO_1, buffer, bufferfree >> 2); |
303 | buffer += bufferfree & 0xFC; |
304 | len -= bufferfree & 0xFC; |
305 | } |
306 | else if(bufferfree > 0) |
307 | { |
308 | len -= bufferfree; |
309 | for(; bufferfree > 0; bufferfree--) |
310 | outb(*(buffer++), base + PIO_FIFO_1); |
311 | } |
312 | else |
313 | { |
314 | i = jiffies + timeout; |
315 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
316 | while(time_before(jiffies, i) && (inb(base + PIO_INT_REG) & FULL) && timeout) |
317 | ; |
318 | spin_lock_irqsave(&sym53c416_lock, flags); |
319 | if(inb(base + PIO_INT_REG) & FULL) |
320 | timeout = 0; |
321 | } |
322 | } |
323 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
324 | return orig_len - len; |
325 | } |
326 | |
327 | static irqreturn_t sym53c416_intr_handle(int irq, void *dev_id) |
328 | { |
329 | struct Scsi_Host *dev = dev_id; |
330 | int base = dev->io_port; |
331 | int i; |
332 | unsigned long flags = 0; |
333 | unsigned char status_reg, pio_int_reg, int_reg; |
334 | struct scatterlist *sg; |
335 | unsigned int tot_trans = 0; |
336 | |
337 | spin_lock_irqsave(dev->host_lock,flags); |
338 | status_reg = inb(base + STATUS_REG); |
339 | pio_int_reg = inb(base + PIO_INT_REG); |
340 | int_reg = inb(base + INT_REG); |
341 | spin_unlock_irqrestore(dev->host_lock, flags); |
342 | |
343 | /* First, we handle error conditions */ |
344 | if(int_reg & SCI) /* SCSI Reset */ |
345 | { |
346 | printk(KERN_DEBUG "sym53c416: Reset received\n"); |
347 | current_command->SCp.phase = idle; |
348 | current_command->result = DID_RESET << 16; |
349 | spin_lock_irqsave(dev->host_lock, flags); |
350 | current_command->scsi_done(current_command); |
351 | spin_unlock_irqrestore(dev->host_lock, flags); |
352 | goto out; |
353 | } |
354 | if(int_reg & ILCMD) /* Illegal Command */ |
355 | { |
356 | printk(KERN_WARNING "sym53c416: Illegal Command: 0x%02x.\n", inb(base + COMMAND_REG)); |
357 | current_command->SCp.phase = idle; |
358 | current_command->result = DID_ERROR << 16; |
359 | spin_lock_irqsave(dev->host_lock, flags); |
360 | current_command->scsi_done(current_command); |
361 | spin_unlock_irqrestore(dev->host_lock, flags); |
362 | goto out; |
363 | } |
364 | if(status_reg & GE) /* Gross Error */ |
365 | { |
366 | printk(KERN_WARNING "sym53c416: Controller reports gross error.\n"); |
367 | current_command->SCp.phase = idle; |
368 | current_command->result = DID_ERROR << 16; |
369 | spin_lock_irqsave(dev->host_lock, flags); |
370 | current_command->scsi_done(current_command); |
371 | spin_unlock_irqrestore(dev->host_lock, flags); |
372 | goto out; |
373 | } |
374 | if(status_reg & PE) /* Parity Error */ |
375 | { |
376 | printk(KERN_WARNING "sym53c416:SCSI parity error.\n"); |
377 | current_command->SCp.phase = idle; |
378 | current_command->result = DID_PARITY << 16; |
379 | spin_lock_irqsave(dev->host_lock, flags); |
380 | current_command->scsi_done(current_command); |
381 | spin_unlock_irqrestore(dev->host_lock, flags); |
382 | goto out; |
383 | } |
384 | if(pio_int_reg & (CE | OUE)) |
385 | { |
386 | printk(KERN_WARNING "sym53c416: PIO interrupt error.\n"); |
387 | current_command->SCp.phase = idle; |
388 | current_command->result = DID_ERROR << 16; |
389 | spin_lock_irqsave(dev->host_lock, flags); |
390 | current_command->scsi_done(current_command); |
391 | spin_unlock_irqrestore(dev->host_lock, flags); |
392 | goto out; |
393 | } |
394 | if(int_reg & DIS) /* Disconnect */ |
395 | { |
396 | if(current_command->SCp.phase != message_in) |
397 | current_command->result = DID_NO_CONNECT << 16; |
398 | else |
399 | current_command->result = (current_command->SCp.Status & 0xFF) | ((current_command->SCp.Message & 0xFF) << 8) | (DID_OK << 16); |
400 | current_command->SCp.phase = idle; |
401 | spin_lock_irqsave(dev->host_lock, flags); |
402 | current_command->scsi_done(current_command); |
403 | spin_unlock_irqrestore(dev->host_lock, flags); |
404 | goto out; |
405 | } |
406 | /* Now we handle SCSI phases */ |
407 | |
408 | switch(status_reg & PHBITS) /* Filter SCSI phase out of status reg */ |
409 | { |
410 | case PHASE_DATA_OUT: |
411 | { |
412 | if(int_reg & BS) |
413 | { |
414 | current_command->SCp.phase = data_out; |
415 | outb(FLUSH_FIFO, base + COMMAND_REG); |
416 | sym53c416_set_transfer_counter(base, |
417 | scsi_bufflen(current_command)); |
418 | outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); |
419 | |
420 | scsi_for_each_sg(current_command, |
421 | sg, scsi_sg_count(current_command), i) { |
422 | tot_trans += sym53c416_write(base, |
423 | SG_ADDRESS(sg), |
424 | sg->length); |
425 | } |
426 | if(tot_trans < current_command->underflow) |
427 | printk(KERN_WARNING "sym53c416: Underflow, wrote %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); |
428 | } |
429 | break; |
430 | } |
431 | |
432 | case PHASE_DATA_IN: |
433 | { |
434 | if(int_reg & BS) |
435 | { |
436 | current_command->SCp.phase = data_in; |
437 | outb(FLUSH_FIFO, base + COMMAND_REG); |
438 | sym53c416_set_transfer_counter(base, |
439 | scsi_bufflen(current_command)); |
440 | |
441 | outb(TRANSFER_INFORMATION | PIO_MODE, base + COMMAND_REG); |
442 | |
443 | scsi_for_each_sg(current_command, |
444 | sg, scsi_sg_count(current_command), i) { |
445 | tot_trans += sym53c416_read(base, |
446 | SG_ADDRESS(sg), |
447 | sg->length); |
448 | } |
449 | if(tot_trans < current_command->underflow) |
450 | printk(KERN_WARNING "sym53c416: Underflow, read %d bytes, request for %d bytes.\n", tot_trans, current_command->underflow); |
451 | } |
452 | break; |
453 | } |
454 | |
455 | case PHASE_COMMAND: |
456 | { |
457 | current_command->SCp.phase = command_ph; |
458 | printk(KERN_ERR "sym53c416: Unknown interrupt in command phase.\n"); |
459 | break; |
460 | } |
461 | |
462 | case PHASE_STATUS: |
463 | { |
464 | current_command->SCp.phase = status_ph; |
465 | outb(FLUSH_FIFO, base + COMMAND_REG); |
466 | outb(INIT_COMM_COMPLETE_SEQ, base + COMMAND_REG); |
467 | break; |
468 | } |
469 | |
470 | case PHASE_RESERVED_1: |
471 | case PHASE_RESERVED_2: |
472 | { |
473 | printk(KERN_ERR "sym53c416: Reserved phase occurred.\n"); |
474 | break; |
475 | } |
476 | |
477 | case PHASE_MESSAGE_OUT: |
478 | { |
479 | current_command->SCp.phase = message_out; |
480 | outb(SET_ATN, base + COMMAND_REG); |
481 | outb(MSG_ACCEPTED, base + COMMAND_REG); |
482 | break; |
483 | } |
484 | |
485 | case PHASE_MESSAGE_IN: |
486 | { |
487 | current_command->SCp.phase = message_in; |
488 | current_command->SCp.Status = inb(base + SCSI_FIFO); |
489 | current_command->SCp.Message = inb(base + SCSI_FIFO); |
490 | if(current_command->SCp.Message == SAVE_POINTERS || current_command->SCp.Message == DISCONNECT) |
491 | outb(SET_ATN, base + COMMAND_REG); |
492 | outb(MSG_ACCEPTED, base + COMMAND_REG); |
493 | break; |
494 | } |
495 | } |
496 | out: |
497 | return IRQ_HANDLED; |
498 | } |
499 | |
500 | static void sym53c416_init(int base, int scsi_id) |
501 | { |
502 | outb(RESET_CHIP, base + COMMAND_REG); |
503 | outb(NOOP, base + COMMAND_REG); |
504 | outb(0x99, base + TOM); /* Time out of 250 ms */ |
505 | outb(0x05, base + STP); |
506 | outb(0x00, base + SYNC_OFFSET); |
507 | outb(EPC | scsi_id, base + CONF_REG_1); |
508 | outb(FE | SCSI2 | TBPA, base + CONF_REG_2); |
509 | outb(IDMRC | QTE | CDB10 | FSCSI | FCLK, base + CONF_REG_3); |
510 | outb(0x83 | EAN, base + CONF_REG_4); |
511 | outb(IE | WSE0, base + CONF_REG_5); |
512 | outb(0, base + FEATURE_EN); |
513 | } |
514 | |
515 | static int sym53c416_probeirq(int base, int scsi_id) |
516 | { |
517 | int irq, irqs; |
518 | unsigned long i; |
519 | |
520 | /* Clear interrupt register */ |
521 | inb(base + INT_REG); |
522 | /* Start probing for irq's */ |
523 | irqs = probe_irq_on(); |
524 | /* Reinit chip */ |
525 | sym53c416_init(base, scsi_id); |
526 | /* Cause interrupt */ |
527 | outb(NOOP, base + COMMAND_REG); |
528 | outb(ILLEGAL, base + COMMAND_REG); |
529 | outb(0x07, base + DEST_BUS_ID); |
530 | outb(0x00, base + DEST_BUS_ID); |
531 | /* Wait for interrupt to occur */ |
532 | i = jiffies + 20; |
533 | while(time_before(jiffies, i) && !(inb(base + STATUS_REG) & SCI)) |
534 | barrier(); |
535 | if(time_before_eq(i, jiffies)) /* timed out */ |
536 | return 0; |
537 | /* Get occurred irq */ |
538 | irq = probe_irq_off(irqs); |
539 | sym53c416_init(base, scsi_id); |
540 | return irq; |
541 | } |
542 | |
543 | /* Setup: sym53c416=base,irq */ |
544 | void sym53c416_setup(char *str, int *ints) |
545 | { |
546 | int i; |
547 | |
548 | if(host_index >= MAXHOSTS) |
549 | { |
550 | printk(KERN_WARNING "sym53c416: Too many hosts defined\n"); |
551 | return; |
552 | } |
553 | if(ints[0] < 1 || ints[0] > 2) |
554 | { |
555 | printk(KERN_ERR "sym53c416: Wrong number of parameters:\n"); |
556 | printk(KERN_ERR "sym53c416: usage: sym53c416=<base>[,<irq>]\n"); |
557 | return; |
558 | } |
559 | for(i = 0; i < host_index && i >= 0; i++) |
560 | if(hosts[i].base == ints[1]) |
561 | i = -2; |
562 | if(i >= 0) |
563 | { |
564 | hosts[host_index].base = ints[1]; |
565 | hosts[host_index].irq = (ints[0] == 2)? ints[2] : 0; |
566 | host_index++; |
567 | } |
568 | } |
569 | |
570 | static int sym53c416_test(int base) |
571 | { |
572 | outb(RESET_CHIP, base + COMMAND_REG); |
573 | outb(NOOP, base + COMMAND_REG); |
574 | if(inb(base + COMMAND_REG) != NOOP) |
575 | return 0; |
576 | if(!inb(base + TC_HIGH) || inb(base + TC_HIGH) == 0xFF) |
577 | return 0; |
578 | if((inb(base + PIO_INT_REG) & (FULL | EMPTY | CE | OUE | FIE | EIE)) != EMPTY) |
579 | return 0; |
580 | return 1; |
581 | } |
582 | |
583 | |
584 | static struct isapnp_device_id id_table[] = { |
585 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
586 | ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4161), 0 }, |
587 | { ISAPNP_ANY_ID, ISAPNP_ANY_ID, |
588 | ISAPNP_VENDOR('S','L','I'), ISAPNP_FUNCTION(0x4163), 0 }, |
589 | { ISAPNP_DEVICE_SINGLE_END } |
590 | }; |
591 | |
592 | MODULE_DEVICE_TABLE(isapnp, id_table); |
593 | |
594 | static void sym53c416_probe(void) |
595 | { |
596 | int *base = probeaddrs; |
597 | int ints[2]; |
598 | |
599 | ints[0] = 1; |
600 | for(; *base; base++) { |
601 | if (request_region(*base, IO_RANGE, ID)) { |
602 | if (sym53c416_test(*base)) { |
603 | ints[1] = *base; |
604 | sym53c416_setup(NULL, ints); |
605 | } |
606 | release_region(*base, IO_RANGE); |
607 | } |
608 | } |
609 | } |
610 | |
611 | int __init sym53c416_detect(struct scsi_host_template *tpnt) |
612 | { |
613 | unsigned long flags; |
614 | struct Scsi_Host * shpnt = NULL; |
615 | int i; |
616 | int count; |
617 | struct pnp_dev *idev = NULL; |
618 | |
619 | #ifdef MODULE |
620 | int ints[3]; |
621 | |
622 | ints[0] = 2; |
623 | if(sym53c416_base[0]) |
624 | { |
625 | ints[1] = sym53c416_base[0]; |
626 | ints[2] = sym53c416_base[1]; |
627 | sym53c416_setup(NULL, ints); |
628 | } |
629 | if(sym53c416_base_1[0]) |
630 | { |
631 | ints[1] = sym53c416_base_1[0]; |
632 | ints[2] = sym53c416_base_1[1]; |
633 | sym53c416_setup(NULL, ints); |
634 | } |
635 | if(sym53c416_base_2[0]) |
636 | { |
637 | ints[1] = sym53c416_base_2[0]; |
638 | ints[2] = sym53c416_base_2[1]; |
639 | sym53c416_setup(NULL, ints); |
640 | } |
641 | if(sym53c416_base_3[0]) |
642 | { |
643 | ints[1] = sym53c416_base_3[0]; |
644 | ints[2] = sym53c416_base_3[1]; |
645 | sym53c416_setup(NULL, ints); |
646 | } |
647 | #endif |
648 | printk(KERN_INFO "sym53c416.c: %s\n", VERSION_STRING); |
649 | |
650 | for (i=0; id_table[i].vendor != 0; i++) { |
651 | while((idev=pnp_find_dev(NULL, id_table[i].vendor, |
652 | id_table[i].function, idev))!=NULL) |
653 | { |
654 | int i[3]; |
655 | |
656 | if(pnp_device_attach(idev)<0) |
657 | { |
658 | printk(KERN_WARNING "sym53c416: unable to attach PnP device.\n"); |
659 | continue; |
660 | } |
661 | if(pnp_activate_dev(idev) < 0) |
662 | { |
663 | printk(KERN_WARNING "sym53c416: unable to activate PnP device.\n"); |
664 | pnp_device_detach(idev); |
665 | continue; |
666 | |
667 | } |
668 | |
669 | i[0] = 2; |
670 | i[1] = pnp_port_start(idev, 0); |
671 | i[2] = pnp_irq(idev, 0); |
672 | |
673 | printk(KERN_INFO "sym53c416: ISAPnP card found and configured at 0x%X, IRQ %d.\n", |
674 | i[1], i[2]); |
675 | sym53c416_setup(NULL, i); |
676 | } |
677 | } |
678 | sym53c416_probe(); |
679 | |
680 | /* Now we register and set up each host adapter found... */ |
681 | for(count = 0, i = 0; i < host_index; i++) { |
682 | if (!request_region(hosts[i].base, IO_RANGE, ID)) |
683 | continue; |
684 | if (!sym53c416_test(hosts[i].base)) { |
685 | printk(KERN_WARNING "No sym53c416 found at address 0x%03x\n", hosts[i].base); |
686 | goto fail_release_region; |
687 | } |
688 | |
689 | /* We don't have an irq yet, so we should probe for one */ |
690 | if (!hosts[i].irq) |
691 | hosts[i].irq = sym53c416_probeirq(hosts[i].base, hosts[i].scsi_id); |
692 | if (!hosts[i].irq) |
693 | goto fail_release_region; |
694 | |
695 | shpnt = scsi_register(tpnt, 0); |
696 | if (!shpnt) |
697 | goto fail_release_region; |
698 | /* Request for specified IRQ */ |
699 | if (request_irq(hosts[i].irq, sym53c416_intr_handle, 0, ID, shpnt)) |
700 | goto fail_free_host; |
701 | |
702 | spin_lock_irqsave(&sym53c416_lock, flags); |
703 | shpnt->unique_id = hosts[i].base; |
704 | shpnt->io_port = hosts[i].base; |
705 | shpnt->n_io_port = IO_RANGE; |
706 | shpnt->irq = hosts[i].irq; |
707 | shpnt->this_id = hosts[i].scsi_id; |
708 | sym53c416_init(hosts[i].base, hosts[i].scsi_id); |
709 | count++; |
710 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
711 | continue; |
712 | |
713 | fail_free_host: |
714 | scsi_unregister(shpnt); |
715 | fail_release_region: |
716 | release_region(hosts[i].base, IO_RANGE); |
717 | } |
718 | return count; |
719 | } |
720 | |
721 | const char *sym53c416_info(struct Scsi_Host *SChost) |
722 | { |
723 | int i; |
724 | int base = SChost->io_port; |
725 | int irq = SChost->irq; |
726 | int scsi_id = 0; |
727 | int rev = inb(base + TC_HIGH); |
728 | |
729 | for(i = 0; i < host_index; i++) |
730 | if(hosts[i].base == base) |
731 | scsi_id = hosts[i].scsi_id; |
732 | sprintf(info, "Symbios Logic 53c416 (rev. %d) at 0x%03x, irq %d, SCSI-ID %d, %s pio", rev, base, irq, scsi_id, (fastpio)? "fast" : "slow"); |
733 | return info; |
734 | } |
735 | |
736 | static int sym53c416_queuecommand_lck(Scsi_Cmnd *SCpnt, void (*done)(Scsi_Cmnd *)) |
737 | { |
738 | int base; |
739 | unsigned long flags = 0; |
740 | int i; |
741 | |
742 | /* Store base register as we can have more than one controller in the system */ |
743 | base = SCpnt->device->host->io_port; |
744 | current_command = SCpnt; /* set current command */ |
745 | current_command->scsi_done = done; /* set ptr to done function */ |
746 | current_command->SCp.phase = command_ph; /* currect phase is the command phase */ |
747 | current_command->SCp.Status = 0; |
748 | current_command->SCp.Message = 0; |
749 | |
750 | spin_lock_irqsave(&sym53c416_lock, flags); |
751 | outb(scmd_id(SCpnt), base + DEST_BUS_ID); /* Set scsi id target */ |
752 | outb(FLUSH_FIFO, base + COMMAND_REG); /* Flush SCSI and PIO FIFO's */ |
753 | /* Write SCSI command into the SCSI fifo */ |
754 | for(i = 0; i < SCpnt->cmd_len; i++) |
755 | outb(SCpnt->cmnd[i], base + SCSI_FIFO); |
756 | /* Start selection sequence */ |
757 | outb(SEL_WITHOUT_ATN_SEQ, base + COMMAND_REG); |
758 | /* Now an interrupt will be generated which we will catch in out interrupt routine */ |
759 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
760 | return 0; |
761 | } |
762 | |
763 | DEF_SCSI_QCMD(sym53c416_queuecommand) |
764 | |
765 | static int sym53c416_host_reset(Scsi_Cmnd *SCpnt) |
766 | { |
767 | int base; |
768 | int scsi_id = -1; |
769 | int i; |
770 | unsigned long flags; |
771 | |
772 | spin_lock_irqsave(&sym53c416_lock, flags); |
773 | |
774 | /* printk("sym53c416_reset\n"); */ |
775 | base = SCpnt->device->host->io_port; |
776 | /* search scsi_id - fixme, we shouldn't need to iterate for this! */ |
777 | for(i = 0; i < host_index && scsi_id == -1; i++) |
778 | if(hosts[i].base == base) |
779 | scsi_id = hosts[i].scsi_id; |
780 | outb(RESET_CHIP, base + COMMAND_REG); |
781 | outb(NOOP | PIO_MODE, base + COMMAND_REG); |
782 | outb(RESET_SCSI_BUS, base + COMMAND_REG); |
783 | sym53c416_init(base, scsi_id); |
784 | |
785 | spin_unlock_irqrestore(&sym53c416_lock, flags); |
786 | return SUCCESS; |
787 | } |
788 | |
789 | static int sym53c416_release(struct Scsi_Host *shost) |
790 | { |
791 | if (shost->irq) |
792 | free_irq(shost->irq, shost); |
793 | if (shost->io_port && shost->n_io_port) |
794 | release_region(shost->io_port, shost->n_io_port); |
795 | return 0; |
796 | } |
797 | |
798 | static int sym53c416_bios_param(struct scsi_device *sdev, |
799 | struct block_device *dev, |
800 | sector_t capacity, int *ip) |
801 | { |
802 | int size; |
803 | |
804 | size = capacity; |
805 | ip[0] = 64; /* heads */ |
806 | ip[1] = 32; /* sectors */ |
807 | if((ip[2] = size >> 11) > 1024) /* cylinders, test for big disk */ |
808 | { |
809 | ip[0] = 255; /* heads */ |
810 | ip[1] = 63; /* sectors */ |
811 | ip[2] = size / (255 * 63); /* cylinders */ |
812 | } |
813 | return 0; |
814 | } |
815 | |
816 | /* Loadable module support */ |
817 | #ifdef MODULE |
818 | |
819 | MODULE_AUTHOR("Lieven Willems"); |
820 | MODULE_LICENSE("GPL"); |
821 | |
822 | module_param_array(sym53c416, uint, NULL, 0); |
823 | module_param_array(sym53c416_1, uint, NULL, 0); |
824 | module_param_array(sym53c416_2, uint, NULL, 0); |
825 | module_param_array(sym53c416_3, uint, NULL, 0); |
826 | |
827 | #endif |
828 | |
829 | static struct scsi_host_template driver_template = { |
830 | .proc_name = "sym53c416", |
831 | .name = "Symbios Logic 53c416", |
832 | .detect = sym53c416_detect, |
833 | .info = sym53c416_info, |
834 | .queuecommand = sym53c416_queuecommand, |
835 | .eh_host_reset_handler =sym53c416_host_reset, |
836 | .release = sym53c416_release, |
837 | .bios_param = sym53c416_bios_param, |
838 | .can_queue = 1, |
839 | .this_id = SYM53C416_SCSI_ID, |
840 | .sg_tablesize = 32, |
841 | .cmd_per_lun = 1, |
842 | .unchecked_isa_dma = 1, |
843 | .use_clustering = ENABLE_CLUSTERING, |
844 | }; |
845 | #include "scsi_module.c" |
846 |
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